nb_set_dict/3

Documentation
- Reference manual
  - SWI-Prolog extensions
    - Dicts: structures with named arguments
      - Predicates for managing dicts
        
        Destructive assignment in dicts
        
        b_set_dict/3
        
        nb_set_dict/3
        
        nb_link_dict/3
- Packages

Availability:built-in

[det]nb_set_dict(+Key, !Dict, +Value)

Destructively update the value associated with Key in Dict to a copy of Value. The update is not undone on backtracking. This predicate raises an existence error if Key does not appear in Dict. The update semantics are equivalent to nb_setarg/3 and nb_setval/2.

History

Enhanced in 9.3.18 (👉2ec4bb2) Use improved sharing in nb_set_dict/3.